JP2696609B2 - Automatic chair laying and collecting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic chair laying system for automatically collecting a large number of single or multiple chairs on a trolley at a conference hall, a gymnasium, etc., and laying the collected chairs.・ This is related to a recovery machine.

[0002]

2. Description of the Related Art An automatic laying and collecting machine of this type is disclosed in Japanese Patent Laid-Open Publication No. 1-150633, in which a chair is engaged with a groove formed in a backrest portion thereof and is gripped by a gripping tool to hang a substantially horizontal chair. It is well-known that the wire is collected along the lower rail and the gripping tool is moved back to lay the wire.

[0003]

However, in this apparatus, a power unit for automatically processing a chair and moving the trolley is integrally mounted on a trolley for recovering the chair, so that the structure of each trolley is bulky. It will be expensive.

[0004] In view of the foregoing, it is an object of the present invention to provide an automatic chair laying / collecting machine in which a power unit that can be used in common for a plurality of trolleys is prepared.

[0005]

In order to achieve this object, the present invention provides a base on which the front legs on both sides of a multiplicity of horizontally stacked chairs are mounted, and the base is supported by a lower end of the front legs. A trolley equipped with a horizontal chair guide bar inserted between the legs to support the chair from below and to guide in the laying / recovering direction, so that the trolley can be placed as a A power device that is detachably mounted, the power device being a trolley lift device that lifts the trolley from the floor, a grip device body that is mounted on a rail that can enter below the chair guide bar and holds the chair, and a chair A chair gripping device comprising a gripping position control device for moving the gripping device body between the installation position on the floor and the chair collection position on the chair guide bar, and a drive wheel and a steering wheel for arbitrarily moving on the floor. Equipment It is characterized in that was.

In order to improve work efficiency, a plurality of trolleys are juxtaposed and connected to each other so that the associated chair guide bar is inserted between each leg of the chairs juxtaposed and connected to each other. A plurality of power units are juxtaposed and connected to each other so as to be detachably mounted on the plurality of carts, and each of the power units includes a cart lift device for lifting the carts. It is conceivable that only one power unit is provided with a chair gripping device.

[0007]

[Function] At the time of work, the power unit is mounted on the bogie,
The drive wheels and the steered wheels are operated and moved to the working position in a state where the bogie is lifted by operating the bogie lift device.

[0008] At the time of laying, the gripping device main body reciprocates between the state-of-the-art chair collection position and the floor installation position along the rail, so that the state-of-the-art state where the state-of-the-art state is collected by being piled forward on the chair guide bar. The operation of holding the chair, moving to the floor installation position and releasing the chair is repeated.

At the time of collection, similarly, the gripping device main body reciprocates between the floor installation position and the most advanced chair collection position along the rail, thereby gripping the chair installed on the floor and attaching the lower end of the front leg to the base. The operation of moving the chair to the state-of-the-art chair collection position and releasing it in a state where it is placed as a fulcrum and supported by the chair guide bar in the forward tilted state is repeated.

[0010]

1 to 11 show an automatic chair laying and collecting machine according to an embodiment of the present invention, and FIG. 11 shows a chair to be processed. The chair 1 includes a horizontal bar 1b above the front legs 1a and separated from the seating portion 1d, and between the rear legs 1c of the front chair 1 in a forwardly inclined state, and a seating portion of the next chair 1 from behind. 1d is configured to be penetrable for stacking.

In FIG. 1, reference numeral 10 denotes a cart for collecting the chair 1, that is, a dolly. This trolley is the front leg 1a of the chair 1.
Rail-shaped bases 11 on both sides on which the lower ends of the rails are placed, and the rail-shaped bases 11 which are horizontally mounted on the bases and are inserted between the legs 1a and 1c to support the horizontal bar 1b in a forwardly inclined state. And a chair guide bar 12. The rail bases 11 on both sides are connected by a handle 13 at the rear and by a connecting bar 11a at the front entrance side. The distance between the base 11 and the chair guide bar 12 corresponds to the size of the lower end of the front leg 1a and the horizontal bar 1b in the forwardly inclined state. The distance between the chair guide bars 12 on both sides corresponds to the distance between the front legs 1a. Casters, that is, wheels 15 are attached to the front, rear, left and right of the base 11.

At the rear end of the chair guide bar 12, there is provided a stopper 18 with a U-shaped guide groove for inserting the horizontal bar 1b of the tilted chair 1 and restraining it at an intermediate position. The distal end portion 12a of the chair guide bar 12 is tapered and downward so that it can be easily inserted between the front legs 1a of the chair 1 installed on the floor and penetrate under the horizontal bar 1b. It is inclined toward. The tip of the base 11 is similarly inclined downward and protrudes shorter, but at a slight steep angle so as to easily cause the chair 1 to tilt forward when laying. At the rear ends of the bases 11 on both sides, a pin hole in which the connecting pin 19 is set through the connecting plate 19a is formed so that the carts 10 can be connected in a juxtaposed state.

FIGS. 2 and 3 show a power unit 20, in which a battery 21 is mounted as a power source for driving each motor described later. First, the frame 2 is driven by the motor 22a.
0a is driven, and a motor 23a is driven.
The steering wheel 23 is controlled. The width of the frame 20a in the lateral direction corresponds to the gap between the bases 11 so that the frame 20a can be inserted in a close state. On both sides of the rear end of the frame, a stopper frame 20b is protruded, and a pin hole is formed so that the connecting pin 39 is set through the connecting plate 39a.

The chair guide bar 12 is provided on the frame 20a.
So that it is set below the main body 27 of both sides.
Are mounted on both sides. These gripping device main bodies are fixed to chains 291 on both sides arranged along the rail 28. This chain is mounted on a guide gear 296, a position adjustable gear 297 and a drive gear 295. This drive gear is driven by a drive wheel 29
The drive wheels are engaged with both sides of a rotating shaft fixed to 4, and driven by a motor 292 that rotates forward and backward through a speed reducer 293 and a timing belt.

Further, a pair of right and left bogie lift devices 26 indicated by dotted lines are mounted on the back side of the frame 20a. As shown in FIG.
1 and power cylinders 264 on both sides incorporating screw rods 263 driven by a motor 262, hinged to the tip of the screw rod 263, the outer end of which is the frame 20.
a, an arm 265 hinged to the pin 300 by a pin 300, a rod 267 hinged at the intermediate position of the arm by a pin 301 at a distal end thereof, and a hinge at a rear end of the rod by a pin 302, and an outer end thereof to the frame 20a. And an arm 268 hinged by a pin 303. Arms 265 and 268 which extend obliquely and laterally outward from the inside in the normal state are provided with driving portions 26a and 26b which project in the vertical direction from the hinge position so as to function as rotary lift driving members, respectively. ing. Thereby, the screw rod 26
In the normal position indicated by the solid line 3, the drive units 26a and 26b are in the inner retracted position. When the screw rod 263 rotates and protrudes while rotating, the driving portion 26a is displaced by rotation to the position indicated by the two-dot chain line position, and the driving portion 26b also occupies the two-dot chain line position in conjunction with the link action of the rod 267. Drive unit 26
As shown in FIG. 5, the outer end surfaces of the drive surfaces 26c, 26b are inclined curved surfaces that are directed downward and laterally outward at the displacement position.
It is formed as. Accordingly, the front, rear, left and right driving surfaces 26c are displaced outward in the horizontal direction, so that the pressed surface 11 at the back end of the base 11 as the pressed member of the carriage 10 is formed.
b so as to float along the inclined surface of the drive surface 26c. The pressed surface 11b is also an inclined curved surface slightly outward and outward. The inside of the hinge position of the arm 265 is sufficiently longer than the outside, and a sufficient pressing force can be obtained by the leverage principle.

In the above-described embodiment, the bogie lift device uses a common motor for the left and right drive mechanisms, or the drive member can be displaced linearly in the horizontal direction and linearly moves forward and backward by the actuator. It is also conceivable to configure so as to drive.

As shown in FIGS. 6 and 7, the gripping device main body 27 is mounted on both rails 28, respectively.
The rail 28 is fixed to the chain 291, and the rail 28 is
A movable platform 271 which is sandwiched and travels at 72, and a laying hook 277 which is opposed to each other in the rail direction and has a height protruding from the chair guide bar 12 and is swingably erected.
And a collection hook 273. The collection hooks 273 on both sides are rotatably attached to a common rotating shaft 274 that crosses the same, and a weight 275 is provided on the opposite side.
Are respectively attached. This weight is movable table 271
Is restrained by the stopper pin 276 protruding into the rotation path inside the hook 273, thereby restraining the hook 273 from rotating forward from the vertical horizontal bar locking position. Also hook 2
When the horizontal bar 1b is pushed by the horizontal bar 1b from the front and pivots rearward, the weight 275 returns to the horizontal bar locking position when the horizontal bar 1b passes to the locking side. Similarly, the laying hooks 277 on both sides are rotatably mounted on a common rotating shaft 278, and the weight 279 is mounted on the opposite side.
Are respectively attached. This weight is movable table 271
When the hook 277 is restrained by the stopper pin 280 detachably attached to the hook 277 to restrain the hook 277 from rotating backward from the vertical horizontal bar locking position, and when the hook 277 is pushed forward by the horizontal bar 1b and rotates forward. When the horizontal bar 1b has passed to the locking side, it is returned to the horizontal bar locking position.

The power unit 20 is provided with a control circuit (not shown), and a control box (not shown) is connected via a cable to supply a command signal to the control circuit. As a result, the forward and backward and steering drive control is performed by the motors 22a and 23a, and the lift and return of the bogie lift device 26 are drive controlled by forward and reverse rotation of the motor 262. The running pitch is detected by the rotation speed sensor of the drive wheels 22, and is automatically stopped at the time of detecting the predetermined running pitch, and the collection or laying operation is drive-controlled by the motor 292. The timing of the laying and collecting operation is set in cooperation with a sensor for detecting the moving position of the gripping device main body 27 on the rail 28 and a sensor for detecting the contact of the holding device main body 27 with the chair.

In operation, the power unit 20 is inserted into the carriage 10 from the handle 13 side, and the stopper frames 2 on both sides are inserted.
0b is the rear end surface 11 of the base 11 of the carriage 10.
a. When the bogie lift device 26 is started in this state, the driving portions 26a and 26b are displaced laterally outward, so that the driving surface 26c is a pressed surface of the base portion 11 located slightly above. Push up the end 11b. As a result, the cart 10 is placed on the power unit 20 and can be smoothly moved to the laying position or the collecting position without being restricted by the casters.

The operation when laying will be described with reference to FIG. The gripping device main body 27 retreats from the standby position at the front end toward the horizontal bar 1b of the front end chair 1 collected by the chair guide bar 12 (A in the figure). When the installation hook 277 is further retracted and abuts on the horizontal bar 1b, it rotates against the weight of the weight 279 (FIG. B), and when it passes to the locking position side, the horizontal bar is locked by the weight 279. It returns to the position and stops (FIG. 3C). Next, when the hook 277 is advanced in the reverse direction,
Locks the horizontal bar 1b while being restrained by the stopper pin 280 and pushes it forward (FIG. D). When the chair guide bar 12 comes to the inclined position, the chair 1 rises due to the movement of the center of gravity, the horizontal bar 1b comes off (E in the figure), and the chair 1 surely rises due to a larger descending of the base 11 on the way. It is laid on the floor (figure F). Lower the hook 273 as it is,
b (G in the figure), the carriage 10 is moved backward by a predetermined traveling pitch, and the next chair 1 is laid by the same operation.

When all the chairs 1 collected on the cart 10 have been laid, the cart is moved to a predetermined position and lowered by the cart lift device 26 to the floor. Next, the same laying process is performed on another truck 10 in the collected state.

At the time of collection, by releasing the stopper pin 280 and releasing the constraint of the weight 279, the hook 2
77 is rotated backward to a low position. As shown in FIG. 9, the collection hook 273 moves forward toward the horizontal bar 1b of the laid chair 1 (FIG. 9A), and the weight 275 is brought into contact with the collection hook 273.
(FIG. 2B). When the hook 273 reaches the lowermost position, the horizontal bar 1b passes to its locking side, and is returned by the weight 275 in the vertical direction with respect to the rail 28 (FIG. C). The chair 1 tilts forward due to the movement in the opposite direction and the chair 1 tilts forward (D in the same figure). When the chair 1 comes to a horizontal position, the center of gravity of the chair 1 moves forward of the lower end of the front leg, and the chair guide is tilted forward. The bar 1 b is supported by the bar 12, and the horizontal bar 1 b is
7 slightly above (Fig. E). Thereby, when the horizontal bar 1b comes to the collection position, the hook 273 is moved to the horizontal bar 1b.
Instead of moving the vehicle forward, it is moved forward to perform the next collection (FIG. F). FIG. 10 shows the posture of the chair 1 in such a collecting operation.

When the specified number of chairs 1 have been collected, the cart 1
0 is moved to a predetermined position, and is set on the floor by the bogie lift device 26. Subsequently, the empty cart 10 is moved to the power unit 20.
And perform the same collection operation.

FIG. 12 shows another embodiment which further develops the present invention, and the same or equivalent parts as those in the above-mentioned embodiment are denoted by the same reference numerals. In this case, the quadruple-type chairs 1 arranged side by side and connected in four rows are to be processed, and the driving wheels 22, the steering wheels 23, the bogie lift device 26, and the chair gripping device 36 which are the same as those in the above-described embodiment are provided. There are provided two power devices 201 in which the chair holding device 36 is eliminated from the power device 20 that has been used. The four trolleys 10 include a connecting pin 19 and a connecting plate 1.
The two power units 20 for the outer trolleys 10 and the two power units 201 for the middle two units are connected by a connecting pin 39 and a connecting plate 39a, and are mounted respectively. Thereby, the four trolleys 10 are lifted by the associated trolley lift device and simultaneously moved. The collection and laying operation is simultaneously performed on the four chair guide bars 12 by the power units 20 on both sides.

[0025]

As described above, according to the present invention, the trolleys are prepared in accordance with the number of the predetermined chair groups, and the power unit for automatically processing the chairs, automatically running, and lifting the trolleys is separable. The number of power units can be reduced by preparing these. Therefore, the structure of the entire device is simplified, which is extremely advantageous in terms of cost. If the power plant fails, the trolley can be used as a dolly. Also, the chair can be structurally simplified because it is supported by the horizontal chair guide bar in a forwardly inclined state, and the chair is supported below the seating portion, so wear or tear occurs during loading and unloading. As inconspicuous as possible.

[Brief description of the drawings]

FIG. 1A is a side view of a cart of an automatic chair laying and collecting machine according to an embodiment of the present invention.

FIG. 1B is a plan view of the carriage.

FIG. 1C is a front view of the carriage.

FIG. 2 is a plan view of a power unit of the automatic chair laying and collecting machine.

FIG. 3 is a side view of the power unit.

FIG. 4 is a plan view of a truck lift device of the power unit.

FIG. 5 is a front view of an essential part for explaining the operation of the bogie lift device.

FIG. 6 is a side view of a gripping device main body of the power unit.

FIG. 7 is a sectional view taken along line AA of FIG. 6;

FIG. 8 is a side view for explaining the operation when the gripping device main body is laid.

FIG. 9 is a view for explaining the operation of the gripping device body at the time of collection.

FIG. 10 is a schematic side view for explaining a collecting state of the chair automatic laying and collecting machine.

FIG. 11 is a front view of a chair to be processed by the automatic chair laying and collecting machine.

FIG. 12 is a plan view of an automatic chair laying and collecting machine according to another embodiment in which a plurality of the trucks are connected.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chair 1b Horizontal bar 10 dolly 11 base 12 chair guide bar 20 power unit 22 drive wheel 23 steering wheel 26 dolly lift device 26a, 26b drive unit 26c drive surface 27 gripping device main body 273 collection hook 277 hook for installation

Claims (2)

(57) [Claims] 1. A base on which front legs on both sides of a number of horizontally stacked chairs are mounted, and the legs are mounted on the base with a lower end of the front legs as a fulcrum and are stacked in a forwardly inclined state. Inserted between to support the chair from below, and
A trolley having a horizontal chair guide bar for guiding in the collection direction, and a power device detachably mounted on the trolley, the power device comprising: a trolley lift device for floating the trolley from the floor; and the chair A grip device main body that is mounted on a rail that can penetrate below the guide bar and grips the chair, and a grip that moves the grip device body between an installation position of the chair on the floor and a chair collection position on the chair guide bar. A chair holding device comprising a position control device;
An automatic chair laying / collecting machine comprising a driving wheel and a steering wheel for arbitrarily moving on a floor. 2. A plurality of trolleys are juxtaposed and connected to each other such that chair guide bars belonging thereto are simultaneously inserted between legs of chairs juxtaposed and connected to each other. A plurality of trolleys are provided side by side so as to be detachably attached to the plurality of trolleys and connected to each other, and each of the power units includes a trolley lift device for floating the trolley, and two outermost two trolleys are provided. An automatic chair laying / collecting machine, wherein only the power unit includes a chair holding device.